SET Proceedings 2978-4387 Caravel Press 10.65582/set.2006.091 2006.091 Water Cooling Characteristics by the Steam Driven Ejector JinZhenHua ShinYouSik JunYouSin LeeSangChul ChungHanShik JeongHyoMin Graduate School, Department of Mechanical and Precision Engineering, Gyeongsang National University, Tongyeong, Republic of KOREA School of Mechanical and Aerospace Engineering• Institute of Marine Industry, Gyeongsang National University, Tongyeong, Republic of KOREA 30082006 5 978-88-89884-05-8 1 6 30 August 2006 © 2006 Copyright WSSET 2006

A steam ejector is a device which is utilized to transport vapour or liquid from low pressure to a higher pressure or to create vacuum condition as its simplicity and reliability. It is widely used in refrigeration system, power system and food industry etc. This study shows water cooling system by using a steam ejector to drop water temperature from 25℃ or higher to approximately △T=5℃. In this study, to replace the present water cooling system, we focused on a water cooling system operated by latent heat of evaporation, thus this system needs a vacuum pressure to evaporate the water in enclosed tank. The water cooling effects depends on the vacuum pressure in the enclosed tank, and the cooling water is generated by latent heat of evaporation. The experimental results shows that the obtained absolute vacuum pressure was about 8~12mmHg by using a steam driven ejector. The time required to reach this vacuum pressure was taken approximately 3~5 minutes and the temperature difference of water was gotten 7℃ when the flow rate was 4ℓ/min.

 steam ejector vacuum pressure latent heat of evaporation 30 August to 1 September 2006 5th International Conference on Sustainable Energy Technologies SET2006 5 Vicenza, Italy